I do. But only towards entities capable of receiving it. Otherwise I am deceiving myself, and projecting intelligence that is not there. We (some of us) practice kindness automatically, but that trait was likely selected due to the benefit it gives us by activating the law of reciprocity.

Edit: Also, your feeling good after being kind essentially completes the transaction. But I know being kind to an LLM has zero impact on that LLM and I feel silly pretending it does.